EZH2 and ependymal tumor: Moreover positive correlation for miR-106b and a considerable trend toward significance in case of miR-19a was noted in relation to EZH2 expression (r = 0.36, p = 0.027 and r = 0.32, p = 0.054 respectively) what altogether indicated for miR-17/92 and miR-106/25 cluster families as significant for PFA ependymal tumors (Fig 4).